* hildon-widgets/hildon-grid-item.c (hildon_grid_item_set_property), (hildon_grid_ite...

* hildon-widgets/hildon-grid-item.c (hildon_grid_item_set_property), (hildon_grid_item_get_property), (hildon_grid_item_class_init): Add icon-basename property. (hildon_grid_item_new, hildon_grid_item_new_with_label): Move code from here to hildon_grid_item_init(), so we can just call g_object_new(). (hildon_grid_item_set_label): Convert NULL label to empty string. Bug fix: don't cast the label widget to a string and compare it against the new label text, use gtk_label_get_label instead. Expect priv->label to always be non-NULL. (update_icon): Don't pass NULL icon name to gtk_icon_theme_load_icon, use default icon instead in that case. * hildon-widgets/hildon-grid-item.h: Make _hildon_grid_item_set_label into public hildon_grid_item_set_label(), so that language bindings can use it. * ut/hildon-widgets_tests.c (VALID_ICON): Use existing icon. (test33a2, test33b4, test33b4): Expect them to succeed now that a HildonGridItem can handle NULL icons.